Implemented trigger creation & deletion via lua

Triggers now have handles for simple understanding, but there's nothing
preventing multiple triggers from sharing the same name.

client/gameplay_scenes/world_connections.cpp

@@ -94,7 +94,6 @@ void World::SendAdminDisconnectForced() {
 	//TODO: (9) World::SendAdminDisconnectForced()
 }
 
-
 void World::SendAdminShutdownRequest() {
 	ClientPacket newPacket;